<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/4/11
 * Time: 16:54
 */
namespace app\admin\model;
use think\Model;

class Area extends Model
{
    public function city()
    {
        return $this->hasMany('City', 'id', 'aid')->field('id,city,title');
    }
}